Satellite Salinity Data Available from SMAP[18-Nov-16] The PO.DAAC is pleased to announce the availability of the version 2.0 SMAP Sea Surface Salinity (SSS) data from Remote Sensing Systems. This builds upon the legacy of the Aquarius/SAC mission and the official NASA salinity retrieval algorithm applied now to observations from the Soil Moisture Active Passive (SMAP) mission.
Study Offers Clues to Better Rainfall Predictions[16-May-16] The saltiness, or salinity, of seawater depends largely on how much moisture is pulled into the air as evaporative winds sweep over the ocean. But pinpointing where the moisture rains back down is a complicated question scientists have long contended with. Now, scientists have found a potential path to better seasonal rainfall predictions. Their study shows a clear link between higher sea surface salinity levels in the North Atlantic Ocean and increased rainfall on land in the African Sahel, the area between the Sahara Desert and the savannah across Central Africa.
Ocean Surface Salinity from NASA's SMAP (Soil Moisture Active Passive) Platform[03-Mar-16] onboard instruments began observations soon after in April 2015. Although SMAP was designed to measure soil moisture from space, its L-band radiometer can also be used to measure sea surface salinity.
International Spacecraft Carrying NASA's Aquarius Instrument Ends Operations[17-Jun-15] An international Earth-observing mission launched in 2011 to study the salinity of the ocean surface ended June 8 when an essential part of the power and attitude control system for the SAC-D spacecraft, which carries NASA's Aquarius instrument, stopped operating. The Aquarius instrument successfully achieved its science objectives and completed its primary three-year mission in November 2014.
SAC-D Aquarius: Los Logros de una Exitosa Misión Satelital Argentina[17-Jun-15] La Comisión Nacional de Actividades Espaciales (CONAE) del Ministerio de Planificación Federal, Inversión Pública y Servicios informa que el satélite argentino SAC-D Aquarius concluyó su servicio operativo. En vísperas de iniciar su quinto año en órbita y tras haber cumplido exitosamente su misión prevista para tres años según su diseño original, el SAC-D Aquarius alcanzó su objetivo de observar el océano, el clima y el medioambiente.
Dark Material on Jupiter's Moon Could Be Sea Salt[16-May-15] NASA laboratory experiments suggest the dark material coating some geological features of Jupiter's moon Europa is likely sea salt from a subsurface ocean, discolored by exposure to radiation. The presence of sea salt on Europa's surface suggests the ocean is interacting with its rocky seafloor - an important consideration in determining whether the icy moon could support life.
The Coming of SMAP, Part Two: SMAP, Aquarius and Our Planet's Water Cycle[02-Mar-15] Chris Howell's article, The Coming of SMAP, Part Two: SMAP, Aquarius and Our Planet's Water Cycle, has been published by AmericaSpace.
Another Step Forward in Solving Climate Puzzle[27-Jan-15] Chris Howell's 22-September-2014 interview with Simon Yueh, SMAP, Aquarius, and Our Planet's Water Cycle: Another Step Forward in Solving Climate Puzzle, is now available on the AmericaSpace website. This in-depth interview covers Simon's contributions to Aquarius and SMAP and the close ties between these missions.
Aquarius Maps Soil Moisture on This Week @NASA[11-July-14] Data from NASA's Aquarius instrument has helped researchers create worldwide maps of soil moisture, showing how the wetness of the land fluctuates with the seasons and weather phenomena.
NASA's Aquarius Returns Global Maps of Soil Moisture[07-July-14] Scientists working with data from NASA's Aquarius instrument have released worldwide maps of soil moisture, showing how the wetness of the land fluctuates with the seasons and weather phenomena.
How Salty is that Seawater? Ask the Aquarius Satellite[25-Mar-13] Scott K. Johnson reports on the Aquarius/SAC-D observatory - one of the newest members of Earth-observing satellites - and ongoing work by the Salinity Processes in the Upper Ocean Regional Study (SPURS) in the field of sea surface salinity.
NASA's Aquarius Sees Salty Shifts[27-Feb-13] Colorful images chronicle the seasonal stirrings of our salty world: Pulses of freshwater gush from the Amazon River's mouth; an invisible seam divides the salty Arabian Sea from the fresher waters of the Bay of Bengal; a large patch of freshwater appears in the eastern tropical Pacific in the winter. These and other changes in ocean salinity patterns are revealed by the first full year of surface salinity data captured by NASA's Aquarius instrument.
With a Grain of Salt[07-Feb-13] Rachel Berkowitz reports that salinity differences - the marker of the oceanic water cycle - have intensified in the upper 700m of the ocean during the past 50 years.
NASA's Aquarius Mission Provides New Ocean View[18-Jan-13] Gary Lagerloef, Simon Yueh and Jeffrey Piepmeier summarize NASA's Aquarius mission for Sea Technology Magazine, including instrument capabilities, findings on salinity and wind forecasts, and what's next.
Ocean Salinity Trends Show Human Fingerprint[08-Nov-12] Researchers at Scripps Institution of Oceanography, UC San Diego report that changes in ocean salinity over the second half of the 20th century are consistent with the influence of human activities and inconsistent with natural climate variations.
Aquarius PI Writes for EOS Transactions[15-Jun-12] Aquarius PI Gary Lagerloef's article Satellite Mission Monitors Ocean Surface Salinity is featured in this month's issue of EOS Transactions, American Geophysical Union.
NASA's Aquarius Maps Ocean Salinity Structure[13-Jun-12] New research using salinity data from NASA's Aquarius instrument on the Aquarius/SAC-D observatory has given scientists an unprecedented look at a key factor involved in the formation of an oceanic wave feature in the tropical Pacific and Atlantic Oceans that influences global climate patterns.
NASA's Ocean Salinity Pathfinder Celebrates its First Year in Orbit[11-Jun-12] It's been a busy first year in space for Aquarius, NASA's pioneering instrument in the measurement of ocean surface salinity from orbit.
An Argentine Partnership with NASA[10-Jun-12] NASA's Ask Magazine describes the development of the satellite from the perspective of Luis Genovese, Project Manager for the Aquarius/SAC-D observatory.
Study Indicates Higher Potential for Extreme Weather[12-Apr-12] A new Science article reports that the water cycle has accelerated by about 4 percent over the last half century. This finding may indicate a higher potential for extreme weather in the coming decades. In an interview with The New York Times, Aquarius science team member, Raymond W. Schmitt, a senior scientist at the Woods Hole Oceanographic Institution, said "the amplification pattern that he sees is really quite dramatic".
NASA's Aquarius Detects Possible Effects of Tropical Storm Lee in Gulf[09-Dec-11] Tropical Storm Lee made landfall over New Orleans on September 2-3, 2011, with predicted rainfall of 15 to 20 inches (38 to 51 centimeters) over southern Louisiana. This coincided with a surge in discharge from the Mississippi River around that time. NASA's Aquarius instrument on the Aquarius/SAC-D spacecraft detected a corresponding low-salinty feature between the Mississippi River delta and the Florida panhandle.
United States and Argentina Sign a Space Cooperation Agreement[31-Oct-11] NASA's top official, Administrator Charles Bolden Jr., met with President Cristina Fernandez de Kirchner on October 25. During the meeting, a Framework Agreement on Cooperation in the Peaceful Use of Outer Space was signed between the governments of the United States and Argentina.
Aquarius Around the World[30-Oct-11] Read more about the launch of Aquarius from news agencies around the world.
Aquarius Yields NASA's First Global Map of Ocean Salinity[22-Sep-11] Aquarius has produced its first map of global ocean salinity. The map is a composite of the first two and a half weeks of data since the instrument became operational on August 25. Yellow and red colors represent areas of higher salinity, with blues and purples indicating areas of lower salinity.
Aquarius Makes First Ocean Salt Measurements[01-Sep-11] NASA's Aquarius instrument has successfully completed its commissioning phase and is now "tasting" the saltiness of Earth's ocean surface, making measurements from its perch in near-polar orbit.
Aquarius/SAC-D Post-Launch News Conference[10-Jun-11] View the post-launch news conference at Vandenberg Air Force Base.
Aquarius Pre-Launch News Conference and Science Briefing[07-Jun-11] View the pre-launch news conference at Vandenberg Air Force Base on UStream (the Aquarius portion of this video begins at about 00:05:00).
New NASA Salt Mapper to Spice Up Climate Forecasts[02-Jun-11] Salt is essential to human life. Most people don't know, however, that salt - in a form nearly the same as the simple table variety - is just as essential to Earth's ocean, serving as a critical driver of key ocean processes. While ancient Greek soothsayers believed they could foretell the future by reading the patterns in sprinkled salt, today's scientists have learned that they can indeed harness this invaluable mineral to foresee the future - of Earth's climate.
NASA JPL Tweetup Today[02-Jun-11] NASA's Jet Propulsion Laboratory (JPL) in Pasadena, California, will host a Tweetup for approximately 120 Twitter followers on Monday, June 6. Tweetup participants will interact with JPL scientists and engineers about these upcoming missions: Aquarius, to study ocean salinity; Grail, to study the moon's gravity field; Juno to Jupiter; and the Mars Science Laboratory/Curiosity rover.
For Aquarius, Sampling Seas No 'Grain of Salt' Task[25-May-11] The breakthrough moment for oceanographer Gary Lagerloef, the principal investigator for NASA's new Aquarius mission, came in 1991. That's when he knew it would be possible to make precise measurements of ocean salinity from space. It has taken nearly two decades to turn that possibility into a reality.
Aquarius Pre-Launch Briefing[20-May-11] Video of the Aquarius Pre-Launch Briefing from NASA HQ.
Aquarius/SAC-D Launch Press Kit Now Available[17-May-11] The Aquarius/SAC-D Launch Press Kit is now available. The kit includes information on media services, quick facts, Mission overview, ocean surface salinity, science goals and objectives, instruments and spacecraft, and Program/Project Management.
NASA Mission Will Observe Earth's Salty Seas[17-May-11] Final preparations are under way for the June 9 launch of the international Aquarius/SAC-D observatory. Engineers at Vandenberg Air Force Base in California are now performing final tests before mating Aquarius/SAC-D to its Delta II rocket.
Aquarius/SAC-D Science Writers Guide Now Available[17-May-11] The Aquarius/SAC-D Science Writers Guide is now available.
NASA Announces News Briefing on Aquarius/Sac-D Mission[12-May-11] NASA will hold a news briefing on Tuesday, May 17, at 10 a.m. PDT (1 p.m. EDT), on the agency's next Earth-observing satellite mission, Aquarius/SAC-D, scheduled to launch on June 9.
Cracking the Ocean Salinity Code[18-Apr-11] Debra Werner reports on the expectations of the Aquarius mission.
NASA's Aquarius: The Water Bearer Flies Soon[06-Apr-11] With more than a few stamps on its passport, NASA's Aquarius instrument on the Argentinian Sat élite de Aplicaciones Científicas (SAC)-D spacecraft will soon embark on its space mission to "taste" Earth's salty ocean.
Salt-Seeking Spacecraft Arrives at Launch Site[31-Mar-11] The Aquarius/SAC-D spacecraft has arrived at its launch site at Vandenberg Air Force Base in California. Following final tests, the spacecraft will be attached to a Delta II rocket for a June 9 launch.
Aquarius/SAC-D Launch Campaign Kicks Off[28-Mar-11] After nine months of successful space environmental testing, the Argentine EO satellite, Aquarius/SAC-D, is ready to start the launch campaign.
Glory and Aquarius: New Climate Sentinels[14-Dec-10] The launching of two new spacecraft in 2011 should expand our understanding of Earth's climate. Glory, a NASA mission set to launch no earlier than February, will study the roles of two critical elements of Earth's climate system: the sun's total solar irradiance and atmospheric airborne particles called aerosols. Then in June, NASA and the Space Agency of Argentina, Comisión Nacional de Actividades Espaciales (CONAE), will jointly launch the Aquarius/Satélite de Aplicaciones Científicas (SAC)-D mission to make space-based measurements of how the concentration of dissolved salt varies across Earth's ocean surface.
Aquarius Multimedia Gallery Page Released[10-Dec-10] The new Multimedia Gallery page for Aquarius was released today. This resource has links to high-resolution animations and images featuring the Aquarius/SAC-D Spacecraft, salinity, water cycle, ocean circulation and climate, along with other pertinent documents.
New Aquarius/SAC-D Mission Lithograph Published[01-Nov-10] The new Aquarius/SAC-D Mission lithograph summarizes science objectives, the water cycle, ocean circulation and climate, and the society benefits of Aquarius measurements.
6th Aquarius/SAC-D Science Meeting Held[10-Aug-10] The 6th Aquarius/SAC-D Science Meeting was held in Seattle, Washington, USA, 19-21 July 2010. Aquarius/SAC-D science objectives address ocean circulation, the global hydrological cycle, climate variability, land processes, land use, soil moisture, natural hazards, health applications, cryosphere, and others. Oral presentations are available online.
6th Aquarius/SAC-D Science Meeting Scheduled[22-Apr-10] The Aquarius/SAC-D satellite mission will convene the 6th Science Meeting in Seattle, Washington, USA, 19-21 July 2010. This meeting will focus on the science team's preparations for the upcoming launch, including the in-orbit checkout, data processing, calibration, validation and near-term data analysis, as well as near-term science applications.
Ocean Salinities Indicate the Water Cycle is Intensifying[21-Apr-10] CSIRO scientists Paul Durack and Susan Wijffels present evidence that the surface ocean beneath rainfall-dominated regions has freshened, while areas dominated by evaporation are saltier.
Salt-Seeking Satellite Shaken By Quake, But Not Stirred[03-Mar-10] NASA's Aquarius instrument, and the Argentinian spacecraft that will carry it into space, the Satélite de Aplicaciones Científicas (SAC-D), successfully rode out one of the largest earthquakes in recorded history February 27 with no problems. The instrument and spacecraft are at the satellite systems contractor's satellite integration facility in Bariloche, Argentina.
International Science Teams Selected for Aquarius/SAC-D Mission[01-Oct-09] NASA and Argentina's Comisión Nacional de Actividades Espaciales (CONAE), with support from the Argentine Ministry of Science, Technology and Innovative Production (MinCyT), have selected additional members of the international scientific investigating team for the Aquarius/Satélite de Aplicaciones Científicas (SAC)-D mission, scheduled to launch in 2010.
With a Pinch of Salt[20-Apr-09] We know that average sea levels have risen over the past century, and that global warming is to blame. But what is climate change doing to the saltiness, or salinity, of our oceans? This is an important question because big shifts in salinity could be a warning that more severe droughts and floods are on their way, or even that global warming is speeding up.
NASA Sees Arctic Ocean Circulation Do an About-Face[13-Nov-07] A team of NASA and university scientists has detected an ongoing reversal in Arctic Ocean circulation triggered by atmospheric circulation changes that vary on decade-long time scales. The results suggest not all the large changes seen in Arctic climate in recent years are a result of long-term trends associated with global warming.
Satellites and Sea Lions: Working Together to Improve Ocean Models[06-Feb-07] The best oceanographers in the world never studied at a university. Yet they know how to navigate expertly along oceanic fronts, the invisible boundaries between waters of different temperatures and densities.
NASA Satellites Find Balance in South America's Water Cycle[05-July-06] For the first time, NASA scientists using space-based measurements have directly monitored and measured the complete cycle of water movement for an entire continent.
Scientists Use Satellites to Help Detect Deep-Ocean Whirlpools[20-Mar-06] Move over, Superman, with your X-ray vision. Marine scientists have figured out a way to see through the ocean's surface and detect what's below, with the help of satellites.
NASA'S New Studies Of Earth's Seas, Skies and Soils[04-Jan-06] They're carbonated, salty, and alternately wet and dry. Exotic champagnes? No, they're NASA's three Earth System Science Pathfinder small-satellite program missions: Orbiting Carbon Observatory, Aquarius and Hydros.
NASA Selects GSFC-Led Mission to Study the Role of Salinity in Ocean Circulation and Climate[10-July-02] As part of the Earth System Science Pathfinder small-satellite program, NASA has selected a new space mission proposal that will yield fresh insight into how oceans affect and respond to climate change.